Installing extra fans question/clarification

[Pandaa]

I've recently bought a new computer and wanted to fit some extra fans.
I bought 4 extra Sharkoon silent eagle 1000's for my Coolmaster HAF 912 but I'm unsure on the correct setup for it.

At the moment I've connected 3 to the coolmaster G750M by a single modular cable (nothing else connected to this).
The top 2 fans to extract the air out of the case I figured it should be OK to be connected directly via molex and the 3rd is connected at the front of the case next to the current one and attached via molex but also connected to my sys fan 3 for monitoring (the other fan is connected via sys fan 2)

Is this OK to do so? Are there any downsides to this or something I should be worried about?
In time I: think it's best I get a multi fan monitor/controller for the front so they could be attached that way?
4th fan for the side isn't connected up yet, tho I could possibly put 2 on 1 modular cable and the top 2 fans on another modular?

Pic of setup http://i.imgur.com/oAWK3R6.jpg

 

[faalin]

so it looks like your fans have a single tac wire on the 3 pin fan header for the motherboard so looks like everything is ok. The only issue i see is the front fans as the original fan in front might be controlled by the motherboard for speed while the new one you put in will run at full speed since its powered by the molex.

Good rule of thumb is air in on the front side and bottom of the case and out on the top and back.

 

[Pandaa]

so it looks like your fans have a single tac wire on the 3 pin fan header for the motherboard so looks like everything is ok. The only issue i see is the front fans as the original fan in front might be controlled by the motherboard for speed while the new one you put in will run at full speed since its powered by the molex.

Good rule of thumb is air in on the front side and bottom of the case and out on the top and back.

Yeah, that was my main worry with the front fan. The fans I came with has a signal line for fan speed monitoring but not sure if that's good enough?
Perhaps for the front one I can get an extension cable?

Alternatively, maybe someone could recommend a fan controller as I've got no idea about them!

 

[madmatt30]

Aerocool x-vision or nzxt sentry 2/3.

They'll both do 5 fans & are good controllers.
Take a whole optical bay up but look nice - set you back about 30 squid